I am quite late to this question, but Glycam.org has a bunch of web-based tools to generate 3D models of glycans. My tool GlycoGlyph provides a good way to draw the glycan and then view the output in glycam check out this tweet for more information: https://twitter.com/akulmehta/status/1337230707945574400
GlycoGlyph can be found at: https://glycotoolkit.com/Tools/GlycoGlyph/